@mixin border-bottom($color) {
  border-bottom: 1px solid $color;
}

@mixin bg-image($url) {
  background-image: url($url + '@2x.png');

  @media (-webkit-min-device-pixel-ratio: 3), (min-device-pixel-ratio: 3) {
    background-image: url($url + '@3x.png');
  }
}

@mixin border-none(){
  &:after{
    display: none;
  }
}
